outlook saying mailbox full when it is not, outlook for mac

An hour later, they got a message that their mailbox was full.

Rebooted outlook but am still getting the mailbox is full message They are still able to send and receive email, so I guess it is more of a nuisance more than anything.

Not sure why it cant count but check the difference between local and server data file sizes by.

This took a day to remove this warning the last time this happened to one of mine.

Exchange itself will tell you how big their mailbox really is.

Within Active Directory (with Exchange plugin) you can specify the size limitations of the mailbox.

Their mailbox must be on the outer rim of being full, that wont last long until they purge their mailbox.

I would suggest to get them to backup older items into an archive, out-dated but best quick resolution.

You can see this if you select a folder in Outlook, and right click Recover Deleted Items - Ive always blamed the lack of an immediate impact on mailbox size from deleting stuff because there is still usually 7 - 14 days worth of deleted items retention for recovery.

Perhaps this is what you are experiencing and eventually your mailbox will squash back down to size.

I guess was giving outlook credit for being smarter than it really is.

The issue was actually a lot simpler than I expected, honestly needed to do more research.

When you switch from cached to online mode Outlook, Outlook stops using the local OST that existed before the change.

Please be aware that, depending on the mailbox size, network, and local system performance, it can take a while to fully synchronize a new.OST.

Outlook Saying Mailbox Full When It Is Not, Outlook For Mac